Please read my other comment in this thread. https://news.ycombinator.com/item?id=11448987 https://news.ycombinator.com/item?id=11448987 Increasing the hash si

Please read my other comment in this thread. https://news.ycombinator.com/item?id=11448987 https://news.ycombinator.com/item?id=11448987 Increasing the hash size doesn't fix the unhappy bucket, but it does reduce chance that packets will ever hit it. So yes, traversal of this bucket will be slow, but it will be hit less often.